Perhaps you should try some spelling variations:
dao thuoc » cao thuoc, tao thuoc, dang thuoc
sach tham » sach nha
thuoc cac » thuoc cuc, thuoc cao, thuoc dac
khoan pho » khoan nhoi, khoan phai, khoan hoi
tham tuc » tham thuc, thai tuc, nham thuc
khoan he » khoa he, khoan ke, khoan le
te sach » toc sach
tuc cac » tu cac, tich cac
su lanh » su anh, tu lanh, su thanh

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( te sach tham tuc cac khoan he thong ) or ( su lanh dao thuoc cac khoan pho thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( te sach tham tuc cac khoan he thong ) OR ( su lanh dao thuoc cac khoan pho thong )).
• Adding a wildcard symbol may retrieve word variants: (( te sach tham tuc cac khoan he thong ) or ( su lanh dao thuoc cac khoan pho thong ))*.